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CVE-2026-88779Memory overflow vulnerability leading to Denial of Service

Vulnerability in NetScaler ADC and NetScaler Gateway. This issue affects ADC: before 14.1-73.41, before 13.1-64.28, before 14.1-73.41 FIPS, and before 13.1-37.282; Gateway: before 14.1-73.41 and before 13.1-64.28.

8.7 HIGHEPSS 11.38%⚡ Known Exploited (CISA KEV)NVD: Analyzed

Overview

Severity

ScoreSeverityVersionVector String
8.7HIGH4.0NetScaler (CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
7.5HIGH3.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA required action

⚡ Known exploited · remediation due Oct 7, 2026

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Details

CVE ID
CVE-2026-88779
Status
Analyzed
Assigner (CNA)
NetScaler
Published
Oct 4, 2026
Last modified
2026-10-05 13:35 UTC
Weaknesses

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-08 08:06 UTC.